NO924552L - Fremgangsmaate og anordning for koding av digitalt audiosignal - Google Patents
Fremgangsmaate og anordning for koding av digitalt audiosignalInfo
- Publication number
- NO924552L NO924552L NO92924552A NO924552A NO924552L NO 924552 L NO924552 L NO 924552L NO 92924552 A NO92924552 A NO 92924552A NO 924552 A NO924552 A NO 924552A NO 924552 L NO924552 L NO 924552L
- Authority
- NO
- Norway
- Prior art keywords
- bits
- critical
- bands
- digital signals
- transmitted
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
I en effektiv anordning til koding av et digitalt signal der anordningen er Innrettet til å omforme (11) et signal på frekvensaksen for å dele signalet på frekvensaksen l signalkomponenter for hver blokk ved adaptlvt tildelte bltantall anvendes det en løsning med ortogonal omforming 11 av et digitalt inngangselgnal for å dele det ortogonalt onformede signal i signalkomponenter for hvert kritisk bånd for å kode signalkomponentene ved adaptlv tildeling av bitantall basert på et tillatt nivå for hvert kritiske bånd til utførelse av flytende behandling av dette der det ved utførelse av den nytende behandling av hver av en flerhet av små blokker son hver har en båndbredde som er smalere enn båndbredden for det kritiske bånd anvendes en løsning for informasjon om ordlengde S3 for en liten blokk blant de små blokker l de respektive kritiske bånd hvorved antall biter for ordlengde reduseres slik at det blir mulig å utføre bitkomprlmerlng l en høyere grad. Ifår det gjelder utførelse av den flytende behandling Sl av hver av en flerhet av små blokker son hver har en båndbredde mindre enn i båndbredden for det kritiske bånd anvendes det en løsning med overføring, istedet for av flytende koeffisienter Sl for de respektive kritiske bånd av informasjon om et tillatt støynivå S2 for hvert kritiske bånd og ordleng- dene S3 for de små blokker hvorved antall biter som skal overføres blir redusert slik at det blir mulig å utføre bltkomprlmerlng i høyere grad. Ved utførelse av den nytende behandling av hver liten blokk hvis båndbredde er smalere enn for det kritiske bånd anvendes det l tillegg en løsning med overføring av informasjon om ordlengde S3 svarende til tildelte bltantall og med overføring, Istedet for av flytende koeffisienter, informasjon som angis på en kvantlserlngs- tabell S6 knyttet til tillatte støynivåer som hver har sitt bestenmelsesområde forskjøvet l en retning mot ¿ lavere nivåer med et på forhånd bestemt nivå fra et slgnalnlvåonråde l det kritiske bånd hvorved bitkomprlmerlng kan utføres i høyere grad.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3091188A JP3060577B2 (ja) | 1991-03-29 | 1991-03-29 | ディジタル信号符号化方法 |
JP3091187A JP3060576B2 (ja) | 1991-03-29 | 1991-03-29 | ディジタル信号符号化方法 |
PCT/JP1992/000237 WO1992017942A1 (fr) | 1991-03-29 | 1992-02-28 | Procede de codage de signaux numeriques |
Publications (2)
Publication Number | Publication Date |
---|---|
NO924552D0 NO924552D0 (no) | 1992-11-25 |
NO924552L true NO924552L (no) | 1993-01-22 |
Family
ID=26432649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO92924552A NO924552L (no) | 1991-03-29 | 1992-11-25 | Fremgangsmaate og anordning for koding av digitalt audiosignal |
Country Status (17)
Country | Link |
---|---|
US (1) | US5311561A (no) |
EP (1) | EP0531538B1 (no) |
KR (1) | KR100312664B1 (no) |
CN (1) | CN1032102C (no) |
AT (1) | ATE165198T1 (no) |
AU (1) | AU654533B2 (no) |
BR (1) | BR9204799A (no) |
CA (1) | CA2083709A1 (no) |
CS (1) | CS92692A3 (no) |
DE (1) | DE69225100T2 (no) |
DK (1) | DK0531538T3 (no) |
FI (1) | FI109627B (no) |
HU (1) | HU213592B (no) |
NO (1) | NO924552L (no) |
PL (1) | PL168474B1 (no) |
RU (1) | RU2090973C1 (no) |
WO (1) | WO1992017942A1 (no) |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5479562A (en) * | 1989-01-27 | 1995-12-26 | Dolby Laboratories Licensing Corporation | Method and apparatus for encoding and decoding audio information |
US5752225A (en) * | 1989-01-27 | 1998-05-12 | Dolby Laboratories Licensing Corporation | Method and apparatus for split-band encoding and split-band decoding of audio information using adaptive bit allocation to adjacent subbands |
US5115240A (en) * | 1989-09-26 | 1992-05-19 | Sony Corporation | Method and apparatus for encoding voice signals divided into a plurality of frequency bands |
EP0535889B1 (en) * | 1991-09-30 | 1998-11-11 | Sony Corporation | Method and apparatus for audio data compression |
JP3104400B2 (ja) * | 1992-04-27 | 2000-10-30 | ソニー株式会社 | オーディオ信号符号化装置及び方法 |
JP3278900B2 (ja) * | 1992-05-07 | 2002-04-30 | ソニー株式会社 | データ符号化装置及び方法 |
JP3153933B2 (ja) * | 1992-06-16 | 2001-04-09 | ソニー株式会社 | データ符号化装置及び方法並びにデータ復号化装置及び方法 |
JPH06180948A (ja) * | 1992-12-11 | 1994-06-28 | Sony Corp | ディジタル信号処理装置又は方法、及び記録媒体 |
JP3186292B2 (ja) * | 1993-02-02 | 2001-07-11 | ソニー株式会社 | 高能率符号化方法及び装置 |
JP3123290B2 (ja) * | 1993-03-09 | 2001-01-09 | ソニー株式会社 | 圧縮データ記録装置及び方法、圧縮データ再生方法、記録媒体 |
JP3531177B2 (ja) * | 1993-03-11 | 2004-05-24 | ソニー株式会社 | 圧縮データ記録装置及び方法、圧縮データ再生方法 |
TW232116B (en) * | 1993-04-14 | 1994-10-11 | Sony Corp | Method or device and recording media for signal conversion |
JP3173218B2 (ja) * | 1993-05-10 | 2001-06-04 | ソニー株式会社 | 圧縮データ記録方法及び装置、圧縮データ再生方法、並びに記録媒体 |
US5581654A (en) * | 1993-05-25 | 1996-12-03 | Sony Corporation | Method and apparatus for information encoding and decoding |
ATE211326T1 (de) * | 1993-05-31 | 2002-01-15 | Sony Corp | Verfahren und vorrichtung zum kodieren oder dekodieren von signalen und aufzeichnungsmedium |
US5765126A (en) * | 1993-06-30 | 1998-06-09 | Sony Corporation | Method and apparatus for variable length encoding of separated tone and noise characteristic components of an acoustic signal |
US5632003A (en) * | 1993-07-16 | 1997-05-20 | Dolby Laboratories Licensing Corporation | Computationally efficient adaptive bit allocation for coding method and apparatus |
TW327223B (en) * | 1993-09-28 | 1998-02-21 | Sony Co Ltd | Methods and apparatus for encoding an input signal broken into frequency components, methods and apparatus for decoding such encoded signal |
US5566154A (en) * | 1993-10-08 | 1996-10-15 | Sony Corporation | Digital signal processing apparatus, digital signal processing method and data recording medium |
KR100330290B1 (ko) * | 1993-11-04 | 2002-08-27 | 소니 가부시끼 가이샤 | 신호부호화장치,신호복호화장치,및신호부호화방법 |
EP0692881B1 (en) * | 1993-11-09 | 2005-06-15 | Sony Corporation | Quantization apparatus, quantization method, high efficiency encoder, high efficiency encoding method, decoder, high efficiency encoder and recording media |
US5764698A (en) * | 1993-12-30 | 1998-06-09 | International Business Machines Corporation | Method and apparatus for efficient compression of high quality digital audio |
US5608713A (en) * | 1994-02-09 | 1997-03-04 | Sony Corporation | Bit allocation of digital audio signal blocks by non-linear processing |
JPH07261797A (ja) * | 1994-03-18 | 1995-10-13 | Mitsubishi Electric Corp | 信号符号化装置及び信号復号化装置 |
PL311812A1 (en) * | 1994-04-01 | 1996-03-18 | Sony Corp | Method of and apparatus for encoding information, method of and apparatus fro decoding information, method of transmitting information and information recording medium |
JP3186412B2 (ja) * | 1994-04-01 | 2001-07-11 | ソニー株式会社 | 情報符号化方法、情報復号化方法、及び情報伝送方法 |
JP3277677B2 (ja) * | 1994-04-01 | 2002-04-22 | ソニー株式会社 | 信号符号化方法及び装置、信号記録媒体、信号伝送方法、並びに信号復号化方法及び装置 |
JP3277682B2 (ja) * | 1994-04-22 | 2002-04-22 | ソニー株式会社 | 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法 |
WO1995030286A2 (en) * | 1994-05-02 | 1995-11-09 | Philips Electronics N.V. | Encoding system and encoding method for encoding a digital signal having at least a first and a second digital signal component |
TW295747B (no) * | 1994-06-13 | 1997-01-11 | Sony Co Ltd | |
JP3277699B2 (ja) * | 1994-06-13 | 2002-04-22 | ソニー株式会社 | 信号符号化方法及び装置並びに信号復号化方法及び装置 |
US5787387A (en) * | 1994-07-11 | 1998-07-28 | Voxware, Inc. | Harmonic adaptive speech coding method and system |
JP3277705B2 (ja) | 1994-07-27 | 2002-04-22 | ソニー株式会社 | 情報符号化装置及び方法、並びに情報復号化装置及び方法 |
JP3341474B2 (ja) * | 1994-07-28 | 2002-11-05 | ソニー株式会社 | 情報符号化方法及び復号化方法、情報符号化装置及び復号化装置、並びに情報記録媒体 |
US5654952A (en) * | 1994-10-28 | 1997-08-05 | Sony Corporation | Digital signal encoding method and apparatus and recording medium |
JP3557674B2 (ja) * | 1994-12-15 | 2004-08-25 | ソニー株式会社 | 高能率符号化方法及び装置 |
JP3371590B2 (ja) * | 1994-12-28 | 2003-01-27 | ソニー株式会社 | 高能率符号化方法及び高能率復号化方法 |
US5940437A (en) * | 1995-01-03 | 1999-08-17 | Intel Corporation | System and method for reducing the peak load on the processor of a block processing modem |
JPH08190764A (ja) * | 1995-01-05 | 1996-07-23 | Sony Corp | ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体 |
US5682463A (en) * | 1995-02-06 | 1997-10-28 | Lucent Technologies Inc. | Perceptual audio compression based on loudness uncertainty |
US5734677A (en) * | 1995-03-15 | 1998-03-31 | The Chinese University Of Hong Kong | Method for compression of loss-tolerant video image data from multiple sources |
US5727119A (en) * | 1995-03-27 | 1998-03-10 | Dolby Laboratories Licensing Corporation | Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase |
JP3580444B2 (ja) * | 1995-06-14 | 2004-10-20 | ソニー株式会社 | 信号伝送方法および装置、並びに信号再生方法 |
JP3082625B2 (ja) * | 1995-07-15 | 2000-08-28 | 日本電気株式会社 | 音声信号処理回路 |
JPH0969781A (ja) * | 1995-08-31 | 1997-03-11 | Nippon Steel Corp | オーディオデータ符号化装置 |
DE69620967T2 (de) * | 1995-09-19 | 2002-11-07 | At & T Corp., New York | Synthese von Sprachsignalen in Abwesenheit kodierter Parameter |
US5819215A (en) * | 1995-10-13 | 1998-10-06 | Dobson; Kurt | Method and apparatus for wavelet based data compression having adaptive bit rate control for compression of digital audio or other sensory data |
JP3189660B2 (ja) | 1996-01-30 | 2001-07-16 | ソニー株式会社 | 信号符号化方法 |
JPH1083623A (ja) * | 1996-09-10 | 1998-03-31 | Sony Corp | 信号記録方法、信号記録装置、記録媒体および信号処理方法 |
TW384434B (en) | 1997-03-31 | 2000-03-11 | Sony Corp | Encoding method, device therefor, decoding method, device therefor and recording medium |
US6026348A (en) * | 1997-10-14 | 2000-02-15 | Bently Nevada Corporation | Apparatus and method for compressing measurement data correlative to machine status |
US6507804B1 (en) | 1997-10-14 | 2003-01-14 | Bently Nevada Corporation | Apparatus and method for compressing measurement data corelative to machine status |
EP0966109B1 (en) * | 1998-06-15 | 2005-04-27 | Matsushita Electric Industrial Co., Ltd. | Audio coding method and audio coding apparatus |
DE19947877C2 (de) * | 1999-10-05 | 2001-09-13 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Einbringen von Informationen in einen Datenstrom sowie Verfahren und Vorrichtung zum Codieren eines Audiosignals |
US20020009000A1 (en) * | 2000-01-18 | 2002-01-24 | Qdesign Usa, Inc. | Adding imperceptible noise to audio and other types of signals to cause significant degradation when compressed and decompressed |
KR20060131798A (ko) * | 2004-01-20 | 2006-12-20 | 돌비 레버러토리즈 라이쎈싱 코오포레이션 | 블록 그룹화에 기반한 오디오 코딩 |
CN101227983B (zh) | 2005-06-14 | 2015-08-19 | 巴塞尔聚烯烃有限公司 | 性能改进的多层塑胶防腐蚀涂层 |
US8599925B2 (en) | 2005-08-12 | 2013-12-03 | Microsoft Corporation | Efficient coding and decoding of transform blocks |
GB201004667D0 (en) | 2010-03-22 | 2010-05-05 | Optimized Systems And Solution | Method and apparatus for compression and de-compression of spectral data |
RU2517356C2 (ru) * | 2012-09-10 | 2014-05-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Мордовский государственный университет им. Н.П. Огарёва" | Способ снижения нелинейных искажений тока в нелинейной комплексной нагрузке и устройство для его осуществления |
CN104703093B (zh) * | 2013-12-09 | 2018-07-17 | 中国移动通信集团公司 | 一种音频输出方法及装置 |
CN112019220B (zh) * | 2020-08-21 | 2023-07-04 | 广东省新一代通信与网络创新研究院 | 一种基于差值偏置检测的块浮点数据压缩方法及装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0064119B1 (fr) * | 1981-04-30 | 1985-08-28 | International Business Machines Corporation | Perfectionnement aux procédés de codage de la voix et dispositif de mise en oeuvre du procédé perfectionné |
JPS60237738A (ja) * | 1984-05-11 | 1985-11-26 | Sony Corp | デイジタル信号伝送装置 |
JP3010637B2 (ja) * | 1989-07-29 | 2000-02-21 | ソニー株式会社 | 量子化装置及び量子化方法 |
JP2913696B2 (ja) * | 1989-09-30 | 1999-06-28 | ソニー株式会社 | ディジタル信号符号化方法 |
JP2811810B2 (ja) * | 1989-10-05 | 1998-10-15 | ソニー株式会社 | 信号符号化装置 |
JPH03132218A (ja) * | 1989-10-18 | 1991-06-05 | Sony Corp | ディジタルデータの高能率符号化装置 |
JPH03132228A (ja) * | 1989-10-18 | 1991-06-05 | Victor Co Of Japan Ltd | 直交変換信号符号化復号化方式 |
US5134475A (en) * | 1990-12-11 | 1992-07-28 | At&T Bell Laboratories | Adaptive leak hdtv encoder |
-
1992
- 1992-02-28 HU HU9203759A patent/HU213592B/hu not_active IP Right Cessation
- 1992-02-28 EP EP92906204A patent/EP0531538B1/en not_active Expired - Lifetime
- 1992-02-28 WO PCT/JP1992/000237 patent/WO1992017942A1/ja active IP Right Grant
- 1992-02-28 DE DE69225100T patent/DE69225100T2/de not_active Expired - Fee Related
- 1992-02-28 KR KR1019920702997A patent/KR100312664B1/ko not_active IP Right Cessation
- 1992-02-28 AT AT92906204T patent/ATE165198T1/de not_active IP Right Cessation
- 1992-02-28 DK DK92906204T patent/DK0531538T3/da active
- 1992-02-28 CA CA002083709A patent/CA2083709A1/en not_active Abandoned
- 1992-02-28 AU AU13383/92A patent/AU654533B2/en not_active Ceased
- 1992-02-28 RU RU92016428/09A patent/RU2090973C1/ru not_active IP Right Cessation
- 1992-02-28 BR BR9204799A patent/BR9204799A/pt not_active Application Discontinuation
- 1992-03-26 US US07/857,774 patent/US5311561A/en not_active Expired - Fee Related
- 1992-03-27 PL PL92294003A patent/PL168474B1/pl unknown
- 1992-03-27 CS CS92926A patent/CS92692A3/cs unknown
- 1992-03-28 CN CN92102294A patent/CN1032102C/zh not_active Expired - Fee Related
- 1992-11-25 NO NO92924552A patent/NO924552L/no unknown
- 1992-11-27 FI FI925400A patent/FI109627B/fi active
Also Published As
Publication number | Publication date |
---|---|
HUT63278A (en) | 1993-07-28 |
EP0531538B1 (en) | 1998-04-15 |
CN1032102C (zh) | 1996-06-19 |
WO1992017942A1 (fr) | 1992-10-15 |
DE69225100D1 (de) | 1998-05-20 |
HU9203759D0 (en) | 1993-04-28 |
KR100312664B1 (ko) | 2002-12-26 |
ATE165198T1 (de) | 1998-05-15 |
HU213592B (en) | 1997-08-28 |
AU654533B2 (en) | 1994-11-10 |
FI925400A (fi) | 1992-11-27 |
DE69225100T2 (de) | 1998-08-06 |
AU1338392A (en) | 1992-11-02 |
DK0531538T3 (da) | 1998-10-19 |
EP0531538A4 (en) | 1994-09-21 |
EP0531538A1 (en) | 1993-03-17 |
PL294003A2 (en) | 1992-11-30 |
FI925400A0 (fi) | 1992-11-27 |
CA2083709A1 (en) | 1992-09-30 |
RU2090973C1 (ru) | 1997-09-20 |
PL168474B1 (pl) | 1996-02-29 |
CS92692A3 (en) | 1992-10-14 |
FI109627B (fi) | 2002-09-13 |
NO924552D0 (no) | 1992-11-25 |
BR9204799A (pt) | 1993-07-13 |
US5311561A (en) | 1994-05-10 |
CN1065565A (zh) | 1992-10-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO924552L (no) | Fremgangsmaate og anordning for koding av digitalt audiosignal | |
NO924551D0 (no) | Anordning for hoeyeffektiv digital datakoding og dekoding | |
DE69122306D1 (de) | Digitales Teilbandsignalkodiergerät | |
DE68917742D1 (de) | Dekodiervorrichtung. | |
TW286454B (no) | ||
CA2128216A1 (en) | Method and apparatus for encoding, decoding and compression of audio-type data | |
RU92016428A (ru) | Способ и кодирование цифрового сигнала | |
KR960036786A (ko) | 영상 신호 부호화 장치 | |
DE69418994D1 (de) | Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird | |
AU2716384A (en) | Digital transmission system | |
JP3168578B2 (ja) | 心理的聴覚基準で適応形量子化する変換ディジタルオーディオ放送信号用の信号圧縮装置 | |
RU94046112A (ru) | Способ сокращения числа данных при передаче и/или накоплении цифровых сигналов, поступающих из нескольких взаимосвязанных каналов | |
KR100330288B1 (ko) | 부호화방법및장치,복호화장치 | |
KR940003389A (ko) | 화상 신호의 부호화 및 복호화 스테이션과, 이를 구비하는 텔레비젼 송수신기, 기억 매체 및 비디오 레코더 | |
KR100254488B1 (ko) | 대역폭 가변 서브밴드 부호화 장치 | |
JPS57115043A (en) | Transmission device for converting orthogonal code | |
KR930007267A (ko) | 서브밴드 코딩에서의 버퍼콘트롤 장치 | |
KR940004979A (ko) | 대역 분할 부호화장치 | |
JPS55134573A (en) | Digital facsimile equipment available for electric transmission of half tone | |
KR950013086A (ko) | 서브밴드 엔코더의 양자화장치 |